Version 1.1, 2014-03-111. Modified the Makefile to use the new -arch flags. 2. Added an option to run the test on a 64bit GPU. 3. Added a check for whether the current architecture is compatible with the specified test option (cpu32|cpu64|gpu32|gpu64). If there is a mismatch, the test now prints a warning. 4. Added a '-h/--help' argument.